Bottom connection screw through setting tool



H. c. BLOCK ET AL BOTTOM CONNECTION SCREW THROUGH SETTING TOOL April 16, 1940.

' Filed .Sept. 25, 1937 @Qfuk 2 Sheets-Sheet 1 April 1940- H. c. BLOCK El AL 1 7,403

BOTTOM CONNECTION SCREW nmouen SETTING' TOOL Filed Sept, 25, 1937 2 Sheets-Sheet 2 M l E r- EA. n

H.C.,BLocK 8; L.A.LAYNE ATTORNEYS Patented Apr. 16, 1949 BOTTOM CONNECTION SCREW THROUGH SETTING TOOL Harold 0. Block and Leslie A. Layne, Houston, Tex.; said Block assignor to said Layne Application September 25. 1937, Serial No. 165,635

6 Claims. (Cl. 166-20),

The invention relates to a combination setting tool and operating device for closing the wash valve when setting a wellbottom assembly.

In landing a well bottom which usually in-- cludes a set shoe,- strainer, liner and packer in position in the well bore it is desirable to com pletely close the lower end of the well bottom assembly after the washing operation has been completed so that there will be no inflow of Figs. and l are similar to Figs. 1 and Z'respectively and illustrate the "arrangement of the parts after the well bottom has been set, the

packer set.

The present invention relates to the general" type of screw through setting tool shown in Patent No. 1,370,779, granted to- Leslie A. Layne T et 'al. on August 7, 1932, and also to the general combination of structure disclosed in the .app1i'- cation for patent of Leslie A. Layne andl-Iarold C. Block, Serial No=. 122,9l8, filed January 29, 1937, for a Packer and setting tool.

In Fig. 1, the well casing is illustrated at .2

in position. Thenthe setting string I7 carrying thecollar 2i] and sleeve 19 is lowered downwardly inside of the assembly until the sleeve I9 passes inside of the collar 24. The periphery of the sleeve l9 "carries a coarse thread 35 which foreign material into the strainer. It is also and the well bottom assembly 3 is lowered there-, 31 4;; desirable to suspend the well bottom from a through so as to project below the lower end 4 point adjacent its lower end while it is being of the casing. positioned in the well bore because in this manner This well bottom assembly includes the set the setting and washing operation can be comshoe 5 which carries a seating ring 6 and a back pleted and the setting string used as a flow tubing pressure valve 7. The inside periphery 8 Ofzlfi without other operations such as removing the the seat ring 6 is cylindrical in order to receive setting string and inserting the tubing. the Wash Valve 9 Whihh is S y arranged It is one of the objects of the present invention within the nipple Ill which forms part of the to provide a setting string which is connected Set Shoe I at the lower end of the well bottom and which Above the nipple t. the S r e ll e 20 will be released by a rotation of thesetting string and may inc ude a suitable number of strainer so that positive release of the setting string from sections l2. Above the strainer is the liner it t well b tt assembly i assured which carries a stop i l against which the packer It is another object of the invention to attach l5 11 Projecting d w wa y i s de o th s a screw through setting tool to the base of a W811 bottom assembly is the S g s g 0 25 Well bottom assembly tubing ll which carries a packer setting portion stm t bject of t invention is tq l8 and extends downwardly to the elevation of n nlpulate the ash valve and set a, well bottom the wash valve 9 where ll terminates in a sleeve assembly with a screw through setting tool which This sleeve carries collar 20 h is is cgnnected to the lower end of the assembly l'QIGaSELDIY. attached t0 the sleeve '9 by thE shear -30 Still another object of the invention is to res An a oh a 22 s ounted lease a screw through setting tool from the lower below the Blillltlr 29 and s a a ed to abut d of 11 tt and t thereafter t against the shoulder 23 of collar 2 5. This collar at setting string for closing the wash valve of the its lower end is formed with. a plurality of spring s assembly. fingers 25 each of which is formed with a thread- -35 A ti further object of t invention is t ed area 26 on itsouter lower end. This threaded provide an apparatus for setting a well bottom a 25 engages With plementary areal? assembly wherein a signal is transmitted to the the inside O h nipple Thefiev D 18 perator when t 1 tt has been com? fingers are held in connected position as seen pletely set and the wash valve closed. in 2 by means of the wash valve ii which 140' Still another object of the invention is to utilize a a cylindricalisurface to abut a n t the a screw through setting tool to .position a Well inside of e e Wash Valve is norbottom, close the wash valve and set the packer many held-in i P i y orvmoie Shear so as to complete the well in asingle operation. pins 3a which project through e nipple Ill Other and further objects of the invention tO- the Wash ve. This entire structure in- =45 will be readily apparent when the following deeluding an the Parts Carriedby the p 17 co scription is considered in ,connection with the pr w generally khOWn as a Setting tool. accompanying drawings wherein; Thisparticular type which includes the threaded Fig. 1 shows a side elevation of the upper end areas 35 and 35 is km'lwh as a Screw through so of the well bottom assembly with certain'parts s tt t because t p o 9 ews t ou h in section and illustrating, the arrangement as the portion 253 to'release the t001- the device is being lowered into the well bore. In assembling this ppa atus at the surface Fig 2 ho s the lower end of the assembly the set shoe, strainer, liner and'packer are asand is a continuation of Fig. 1. 1 sembled with the wash valve 9 and the collar 24 matches with a corresponding coarse thread 36 inside of the collar. Rotation of the setting string l1 engages these threads and the operator may turn the setting string very slowly until the shoulder 23 abuts against the bearing 22.

This engagement advises the operator that his.

setting tool is made up and he can then lower the entire assembly downwardly into the well bore by suspending it on the threads 26 on the setting string of pipe ll.

When the parts arrive at the vdesired elevation v the shoe 5 will rest upon the bottom and the weight of the well bottom assembly will cause the shoe to remain stationary while rotation is,

downward movement by the anti-friction bearing 22. A sufiicient rotation will shear the pins 21 and the operator is thus advised that his setting tool is screwing through because it moves down so that as soon as the threads 35 are released the setting tool can be lowered a sufficient amount so that the beveled face 40 on the lower end of the sleeve l9 will abut against the shoulder J l on the inside of the wash valve 9. During this movement the sleeve I9 will slide through the collars 20 and 23. The weight of the setting string I! may now be applied to the shoulder so that the pins 30 may be sheared. Shearing of the pins 30 releases the valve 9 so that further lowering of the string ll presses the valve 9 downwardly to the position shown in Fig. 4 so that the tapered sealing face 45 on the outside of the valve 9 will be wedged against the face 8 of the seat ring 6. As seen in the drawing Fig. 2 the wash valve 9 has'served as an expander block by holding the fingers 25 in engagement with the threads 2'! of the shoe. When the valve or block moves down the fingers 25 spring inwardly and the settingtool and setting string are released from the shoe, strainer and packer. A set of slip jaws 46 wedge against the inside of the nipple l0 and prevent displacement of the wash valve. This action completely closes the lower end of the well bottom assembly so that there can be no inlet of foreign material.

It will be understood that prior to the closing of the wash valve that a circulation of washing liquid had served to wash the well and in the operation of this device the pressure tending to circulate this liquid is preferably maintained during the screw through action and also during the lowering operation to move the wash valve.

In this manner when the wash valve moves to the closed position of Fig. 4, further circulation is cut off and a jump in pressure on the gauge at the surface will instantly signal the operator that his wash valve is positively closed. This is a very definite indication that the wash valve is closed because there is no other manner in which the liquid could be cut off.

As soon as this indication has been received by the operator that his valve is closed, he may raise the setting string I! so as to withdraw the lower end of the sleeve l9 from within the skirt 48 formed on the upper end of the wash valve 9. As soon as this seal is broken, there will be a drop in pressure on the pressure gauge because the liquid on the inside of the pipe can then flow into the area .49 inside of the strainer II. This drop in pressure insures the operator that his setting string is entirely free from the wash valve and the setting string can then be raised so that the setting tool I8 is moved to the elevation of the recess 5|] in the upper end of the packer l5. The packer setting portion [8 will snap into the recess 50 and upon lowering of the setting string and abut the shoulder 51 so that pressure can be applied to the packer barrel 52 to telescope it downwardly inside of the ratchet fingers 53 to collapse the packing material 54 as seen in Fig. 3. This packer I5 is known as an upside down packer and is readily 'set by a light weight setting string or tubing I! because of the fact that the packer barrel 52 supports the packing 54 and telescopes downwardly inside of it so that the expanding action begins at, the base of the packing and progresses upwardly.

The upper end of the packer may be closed by the apron 55 which fits snugly about the setting string and prohibits the entrance of sediment or other foreign material to the inside of the strainer.

It seems obvious that an apparatus has been provided whereby release of the tool is accomplished by rotation and the closing of the wash valve is accomplished by thereafter lowering the wash line or setting string so that each operation is performed by a separate movement which will not effect the other operations and in each instance a signal is transmitted to advise that that operation is completed.

Broadly, the invention contemplates a combination of structure wherein the well bottom may be landed, the well washed, the bottom of the assembly closed, a signal transmitted to the operator that he has obtained a perfect closure,

and a further signal to indicate that his tool is released from the well bottom so that he can then proceed to set the packer, all in a single operation.

What is claimed is;

1. The combination of a wash pipe, a setting tool threaded thereon, a set shoe, an expander block holding said tool connected to said shoe, and inter-engaging means on said pipe and block to be engaged upon release of said threads to move said block.

2. The combination of a wash pipe, a setting tool threaded thereon, a set shoe, an expander block holding said tool connected to said shoe, and valve means on said block to close'said shoe upon the movement of said block.

3. The combination of a wash pipe, a setting tool threaded thereon, a set shoe, an expander block holding said tool connected to said shoe, and shear means to releasably hold said tool against unthreading from said pipe.

4. The combination of a wash pipe, a setting tool threaded thereon, a set shoe, an expander block holding said tool connected to said shoe, and an antifriction bearing between said tool and shear means.

5. The combination of a wash pipe, a setting tool threaded thereon, a set shoe, an expander block holding said tool connected to said shoe, and shear means to releasably hold said block against displacement.

- 6. The combination of a wash pipe, a setting tool threaded thereon, a set shoe, an expander block holding said tool connected to said shoe, shear means to releasably hold said block against displacement and an upside down packer to be set by said setting tool.

HAROLD C. BLOCK. LESLIE A. LAYNE. 

